title: Variability and genetic structure of the population of watermelon mosaic virus infecting melon in Spain.
mesh_terms: D029773:Citrullus / Q000821:virology*; D019143:Evolution, Molecular; D014644:Genetic Variation; D005838:Genotype; D010802:Phylogeny; D017800:Potyvirus / Q000737:chemistry / Q000145:classification* / Q000235:genetics*; D011995:Recombination, Genetic; D013030:Spain